The focus of this work is a generic intraoperative and image-free planning and execution
application for arbitrary orthopedic interventions using a novel handheld robotic device and
optical see-through glasses (AR). This medical CAD application enables the surgeon to
intraoperatively plan the intervention directly on the patient's bone. The glasses and all the
other instruments are accurately calibrated using new techniques. Several interventions show
the effectiveness of this approach.